CVE-2026-87247 Overview
CVE-2026-87247 is a high-severity vulnerability in the Security component of Oracle Hyperion Financial Management. The flaw allows a low-privileged attacker with network access via HTTP to compromise the application. Successful exploitation results in complete takeover of Oracle Hyperion Financial Management, impacting confidentiality, integrity, and availability. The vulnerability is classified under [CWE-269] Improper Privilege Management. Oracle disclosed the issue in the Oracle Security Alert CSPUSEP2026.
Critical Impact
An authenticated attacker with low privileges can achieve full takeover of Oracle Hyperion Financial Management, resulting in unauthorized access to sensitive financial consolidation data and disruption of enterprise financial reporting processes.
Affected Products
- Oracle Hyperion Financial Management version 11.2.26.0.000
- Oracle Hyperion (Security component)
- Enterprise Performance Management deployments running the affected Hyperion Financial Management release
Discovery Timeline
- 2026-09-15 - CVE-2026-87247 published to the National Vulnerability Database
- 2026-09-17 - Last updated in NVD database
Technical Details for CVE-2026-87247
Vulnerability Analysis
The vulnerability resides in the Security component of Oracle Hyperion Financial Management, a consolidation and financial reporting platform used by large enterprises. The flaw allows an authenticated attacker holding a low-privileged account to escalate access and take control of the application. Because Hyperion Financial Management processes consolidated financial data across business units, compromise exposes regulated financial records and reporting workflows.
Oracle categorizes the exploit complexity as high, indicating that attack conditions are non-trivial and may require specific timing, configuration, or knowledge of the target environment. Despite the higher complexity, the impact ceiling is significant because a successful attack yields full application takeover across confidentiality, integrity, and availability.
Root Cause
The issue maps to [CWE-269] Improper Privilege Management. The Security component fails to correctly enforce privilege boundaries for authenticated sessions. An account provisioned with limited rights can perform operations reserved for higher-privileged roles, ultimately allowing administrative-level control of the Hyperion Financial Management instance.
Attack Vector
Exploitation requires network access via HTTP to the Hyperion Financial Management web interface and valid low-privileged credentials. No user interaction is required. The attacker interacts with the exposed HTTP endpoints of the Security component to trigger the improper privilege handling. Because the scope is unchanged, the compromise remains contained within the vulnerable application, though that includes full control of financial data. Oracle has not published exploit details. Refer to the Oracle Security Alert CSPUSEP2026 for vendor-provided technical context.
Detection Methods for CVE-2026-87247
Indicators of Compromise
- Unexpected privilege changes or new administrative role assignments in Hyperion Financial Management audit logs.
- HTTP requests from low-privileged user sessions targeting administrative endpoints of the Security component.
- Anomalous access to financial consolidation artifacts, journals, or metadata by non-administrative accounts.
- Configuration changes to security classes, application access, or user provisioning outside of change windows.
Detection Strategies
- Correlate authentication logs with subsequent privileged operations to identify sessions where low-privileged users invoke administrative functions.
- Baseline normal user activity patterns and alert on deviations, particularly requests to Security component URIs from standard business users.
- Enable and centralize Hyperion Financial Management audit logging, forwarding events to a SIEM for retrospective analysis.
Monitoring Recommendations
- Ingest Hyperion Financial Management web server and application logs into a centralized analytics platform for correlation with identity events.
- Monitor Oracle HTTP Server or reverse-proxy logs for unusual POST activity targeting the Security component.
- Track user provisioning changes and generate alerts for privilege escalations occurring outside approved workflows.
How to Mitigate CVE-2026-87247
Immediate Actions Required
- Apply the patch referenced in the Oracle Security Alert CSPUSEP2026 to Oracle Hyperion Financial Management 11.2.26.0.000 deployments.
- Inventory all Hyperion Financial Management instances and confirm the running version to prioritize remediation.
- Review and revoke unnecessary low-privileged accounts that have HTTP access to the application.
- Rotate credentials for any account suspected of being used for reconnaissance or exploitation attempts.
Patch Information
Oracle released a fix as part of the CSPUSEP2026 Security Alert. Administrators should review the advisory, download the applicable patch for Oracle Hyperion Financial Management 11.2.26.0.000, and follow Oracle's documented patching procedure for Enterprise Performance Management components. Validate the patch in a non-production environment before promoting to production.
Workarounds
- Restrict network access to the Hyperion Financial Management web interface to trusted management networks using firewall or reverse-proxy allowlists.
- Enforce multi-factor authentication for all Hyperion Financial Management accounts to raise the cost of credential compromise.
- Reduce the number of accounts with any level of application access and apply least-privilege provisioning until the patch is deployed.
- Increase audit logging verbosity and monitor for anomalous privileged operations while the patch is being scheduled.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
